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authorSteve Wise <swise@opengridcomputing.com>2018-03-01 13:57:51 -0800
committerDoug Ledford <dledford@redhat.com>2018-03-08 15:03:03 -0500
commita34fc0893eef691863b5c118df8ff8e6c9fbc7b7 (patch)
tree3012688809b422e9ca6d199f139cfe9fff5c58f0 /drivers
parentRDMA/nldev: provide detailed CM_ID information (diff)
downloadlinux-dev-a34fc0893eef691863b5c118df8ff8e6c9fbc7b7.tar.xz
linux-dev-a34fc0893eef691863b5c118df8ff8e6c9fbc7b7.zip
RDMA/nldev: provide detailed CQ information
Implement the RDMA nldev netlink interface for dumping detailed CQ information. Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/infiniband/core/nldev.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index 3fd3f9e99e11..83e43926c957 100644
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -80,6 +80,11 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
.len = sizeof(struct __kernel_sockaddr_storage) },
[RDMA_NLDEV_ATTR_RES_DST_ADDR] = {
.len = sizeof(struct __kernel_sockaddr_storage) },
+ [RDMA_NLDEV_ATTR_RES_CQ] = { .type = NLA_NESTED },
+ [RDMA_NLDEV_ATTR_RES_CQ_ENTRY] = { .type = NLA_NESTED },
+ [RDMA_NLDEV_ATTR_RES_CQE] = { .type = NLA_U32 },
+ [RDMA_NLDEV_ATTR_RES_USECNT] = { .type = NLA_U64 },
+ [RDMA_NLDEV_ATTR_RES_POLL_CTX] = { .type = NLA_U8 },
};
static int fill_nldev_handle(struct sk_buff *msg, struct ib_device *device)
@@ -359,6 +364,39 @@ out:
return -EMSGSIZE;
}
+static int fill_res_cq_entry(struct sk_buff *msg, struct netlink_callback *cb,
+ struct rdma_restrack_entry *res, uint32_t port)
+{
+ struct ib_cq *cq = container_of(res, struct ib_cq, res);
+ struct nlattr *entry_attr;
+
+ entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_CQ_ENTRY);
+ if (!entry_attr)
+ goto out;
+
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQE, cq->cqe))
+ goto err;
+ if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT,
+ atomic_read(&cq->usecnt), 0))
+ goto err;
+
+ /* Poll context is only valid for kernel CQs */
+ if (rdma_is_kernel_res(res) &&
+ nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_POLL_CTX, cq->poll_ctx))
+ goto err;
+
+ if (fill_res_name_pid(msg, res))
+ goto err;
+
+ nla_nest_end(msg, entry_attr);
+ return 0;
+
+err:
+ nla_nest_cancel(msg, entry_attr);
+out:
+ return -EMSGSIZE;
+}
+
static int nldev_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
@@ -651,6 +689,11 @@ static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = {
.nldev_cmd = RDMA_NLDEV_CMD_RES_CM_ID_GET,
.nldev_attr = RDMA_NLDEV_ATTR_RES_CM_ID,
},
+ [RDMA_RESTRACK_CQ] = {
+ .fill_res_func = fill_res_cq_entry,
+ .nldev_cmd = RDMA_NLDEV_CMD_RES_CQ_GET,
+ .nldev_attr = RDMA_NLDEV_ATTR_RES_CQ,
+ },
};
static int res_get_common_dumpit(struct sk_buff *skb,
@@ -799,6 +842,12 @@ static int nldev_res_get_cm_id_dumpit(struct sk_buff *skb,
return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_CM_ID);
}
+static int nldev_res_get_cq_dumpit(struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_CQ);
+}
+
static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
[RDMA_NLDEV_CMD_GET] = {
.doit = nldev_get_doit,
@@ -828,6 +877,9 @@ static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
[RDMA_NLDEV_CMD_RES_CM_ID_GET] = {
.dump = nldev_res_get_cm_id_dumpit,
},
+ [RDMA_NLDEV_CMD_RES_CQ_GET] = {
+ .dump = nldev_res_get_cq_dumpit,
+ },
};
void __init nldev_init(void)